/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.csp.sentinel.datasource;

import com.alibaba.csp.sentinel.traffic.RemoteAppObserver;

/**
 * The subscriber of OpenSergo traffic rule.
 *
 * @author panxiaojun233
 */
public class OpenSergoRemoteAppObserver implements RemoteAppObserver {

    private static final String DEFAULT_SUBSCRIBE_NAMESPACE = "default";

    public OpenSergoRemoteAppObserver() {
    }

    @Override
    public void onRemoteAppAppears(String app) {
        for (OpenSergoDataSourceGroup dataSourceGroup : OpenSergoDataSourceGroupManager.getGroups()) {
            dataSourceGroup.subscribeTrafficRouterConfig(DEFAULT_SUBSCRIBE_NAMESPACE, app);
        }
    }

    @Override
    public void onRemoteAppDisappears(String app) {
        for (OpenSergoDataSourceGroup dataSourceGroup : OpenSergoDataSourceGroupManager.getGroups()) {
            dataSourceGroup.unSubscribeTrafficRouterConfig(DEFAULT_SUBSCRIBE_NAMESPACE, app);
        }
    }
}
